López-Díez, J., and J. Bermejo-Berros. “Diegetic and Non-Diegetic Surprises, and Their Effect on Liking, Long-Term Recall and Comprehension in Narrative Television Commercials”. Communication & Society, Vol. 32, no. 1, Jan. 2019, pp. 91-106, doi:10.15581/003.32.37817.